NASA SOAR Project Develops ATC Tools for Metroplex Airspace

This is original reporting and analysis by AirPro News.

The National Aeronautics and Space Administration (NASA) has detailed its ongoing SOAR research initiative, aimed at equipping air traffic controllers with advanced decision-support tools to manage complex arrival and departure flows in shared airspace.

Updated on September 14, 2026, by NASA’s Airspace Operations Laboratory (AOL), the project specifically targets “metroplex” environments where multiple Airports create highly interdependent traffic patterns. The research seeks to alleviate terminal area congestion by dynamically utilizing spatial and temporal separation to improve operational efficiency and reduce delays.

Addressing metroplex airspace congestion

In high-density metroplex areas, terminal flows frequently compete for the same airspace resources. NASA’s research addresses these bottlenecks by developing systems that allow controllers to identify and utilize gaps in arrival streams for departing aircraft without compromising safety margins.

According to the agency’s project overview, the operational concept relies on advanced scheduling and spacing tools. NASA stated that the goal is to “identify and display gaps in an arrival flow that could be used by aircraft on an optimized departure route that crosses the arrival flow.”

SOAR decision-support tools and integration

The SOAR initiative introduces several specific tools designed to integrate with existing air traffic management systems, including the Traffic Management Advisor (TMA). The proposed controller toolset includes conflict probes, ghosting positions, slot markers, and trajectory resolution and scheduling functions.

A key component of the interface is the “tie-box” static tool. This feature uses a 4 miles distance threshold to predict whether a relative aircraft will breach separation minimums with a referenced aircraft when crossing a shared waypoint. By Automation these spatial calculations, the system provides controllers with immediate visual cues regarding potential conflicts.

The agency noted that mathematical modeling supports this dynamic approach to traffic management. “Optimization problems indicate that being able to dynamically use either or both spatial or temporal separation results in the most efficient operations,” NASA reported.

AirPro News analysis

As the Joint Planning and Development Office (JPDO) and the Federal Aviation Administration (FAA) continue to modernize the National Airspace System, tools like those developed under the SOAR project will be critical for scaling operations in constrained metroplexes like New York or Southern California. We view the transition of these concepts from the Airspace Operations Laboratory to active Terminal Radar Approach Control (TRACON) facilities as a necessary step to handle projected traffic growth. Automating the calculation of spatial and temporal gaps reduces the cognitive load on controllers, allowing for tighter, safer integration of crossing departure and arrival flows in saturated airspace.

Sources: National Aeronautics and Space Administration (NASA)